No! Studies show that if you maintain and learn to read and write in your home language, it may make learning a second language (here: English) easier for you. The research also shows that you will succeed in learning English whether or not English is what you speak at home.
There are actually a lot of other benefits to being bilingual, too. Did you know bilingual people are more creative? That they’re better at problem solving than monolingual speakers? There are many benefits to having a bilingual brain, from physical benefits to job market benefits, so if you can keep up your home language, you will be glad you did!